61
925.224.3 - EN
INSTRUCTIONS PERTAINING TO THE INSTALLER
32. BOILER SCHEMATIC
32.1 - 240 Fi - 280 Fi - 310 Fi
Key:
1
D.H.W. priority sensor
2
Water pressure switch
3
Three way valve
4
D.H.W. NTC sensor
5
Flow sensor with filter and water flow rate limiter
6
Three way valve motor
7
Gas valve
8
Expansion vessel
9
Ignition electrode
10
Central heating NTC sensor
11
Overheat safety thermostat
12
Flue-water exchanger
13
Flue hood
14
Fan
15
Positive pressure point
(for 280 Fi - 310 Fi model the positive point must be
closed)
16
Air pressure switch
17
Negative pressure point
18
Flame detector electrode
19
Burner
20
Burner injectors
21
D.H.W. plate heat exchanger (automatic by-pass)
22
Pump and air separator
23
System filling cock
24
Boiler drain point
25
Manometer
26
Pressure relief valve
Figure 24
heating
domestic
gas
domestic
heating
inlet
water outlet
water inlet
return
SEALED CHAMBER
0901_0804 / CG_1737
280 Fi - 310 Fi